Q&A: Tekhelet from What Is Permitted in Your Mouth?
Originally published:
This is an English translation (via GPT-5.4). Read the original Hebrew version.
Tekhelet from What Is Permitted in Your Mouth?
Question
Regarding tefillin and some other commandments, it is said that they must come from “what is permitted in your mouth.”
Tekhelet from snails is obviously not something permitted in your mouth.
Or is this rule only for Torah scrolls, tefillin, and mezuzot?
Answer
See here, where this question is raised:
https://shaalvim.co.il/torah/view.asp?id=51
But simply speaking, I do not see the difficulty, since this was said about Torah scrolls, tefillin, and mezuzot, and perhaps about Temple matters. As far as I know, extending it to other commandments has no real basis.